2y^2-50y+225=0

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Solution for 2y^2-50y+225=0 equation:


Simplifying
2y2 + -50y + 225 = 0

Reorder the terms:
225 + -50y + 2y2 = 0

Solving
225 + -50y + 2y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
112.5 + -25y + y2 = 0

Move the constant term to the right:

Add '-112.5' to each side of the equation.
112.5 + -25y + -112.5 + y2 = 0 + -112.5

Reorder the terms:
112.5 + -112.5 + -25y + y2 = 0 + -112.5

Combine like terms: 112.5 + -112.5 = 0.0
0.0 + -25y + y2 = 0 + -112.5
-25y + y2 = 0 + -112.5

Combine like terms: 0 + -112.5 = -112.5
-25y + y2 = -112.5

The y term is -25y.  Take half its coefficient (-12.5).
Square it (156.25) and add it to both sides.

Add '156.25' to each side of the equation.
-25y + 156.25 + y2 = -112.5 + 156.25

Reorder the terms:
156.25 + -25y + y2 = -112.5 + 156.25

Combine like terms: -112.5 + 156.25 = 43.75
156.25 + -25y + y2 = 43.75

Factor a perfect square on the left side:
(y + -12.5)(y + -12.5) = 43.75

Calculate the square root of the right side: 6.614378278

Break this problem into two subproblems by setting 
(y + -12.5) equal to 6.614378278 and -6.614378278.

Subproblem 1

y + -12.5 = 6.614378278 Simplifying y + -12.5 = 6.614378278 Reorder the terms: -12.5 + y = 6.614378278 Solving -12.5 + y = 6.614378278 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '12.5' to each side of the equation. -12.5 + 12.5 + y = 6.614378278 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + y = 6.614378278 + 12.5 y = 6.614378278 + 12.5 Combine like terms: 6.614378278 + 12.5 = 19.114378278 y = 19.114378278 Simplifying y = 19.114378278

Subproblem 2

y + -12.5 = -6.614378278 Simplifying y + -12.5 = -6.614378278 Reorder the terms: -12.5 + y = -6.614378278 Solving -12.5 + y = -6.614378278 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '12.5' to each side of the equation. -12.5 + 12.5 + y = -6.614378278 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + y = -6.614378278 + 12.5 y = -6.614378278 + 12.5 Combine like terms: -6.614378278 + 12.5 = 5.885621722 y = 5.885621722 Simplifying y = 5.885621722

Solution

The solution to the problem is based on the solutions from the subproblems. y = {19.114378278, 5.885621722}

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